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The length of longest rod that can be placed in a room 20 m long, 16 m broad and 12 m high, is?

Correct Answer: 28.2 m

Explanation:

Length of the rod = √(20)2 + (16)2 + (12)2 m
= √800 m
= 20√2 m
= (20 x 1.41) m
= 28.2 m


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